I am posting all of the videos I have to date regarding various exhaust setups on the E92 so you have a better understanding of what components sound like when combined with Fabspeed's X-Pipe and High flow Sportcats:
Fabspeed 2ndary Catbypass "X-Pipe" with Stock Muffler>+16HP/9ft-lbs tq
2008 BMW E92 M3 with Fabspeed's 2ndary Catbypass Pipes on Vimeo
DYNO CHART
Fabspeed 2ndary Catbypass "X-Pipe" with Remus Race>+10HP/13ft-lbs tq
YouTube - 2008 BMW E92 M3 with Fabspeed X-Pipe
Fabspeed 2ndary Catbypass "X-Pipe" with Resonators and 200 cell High-flow Primary Sportcats, ECU Upgrade with Stock Muffler>32HP/17ft-lbs tq
E90 M3 Fabspeed Motorsports Tuned on Vimeo
DYNO CHART
Fabspeed 2ndary Catbypass "X-Pipe" with Resonators and 200 cell High-flow Primary Sportcats with Eisenmann Race>22HP/16ft-lbs tq
YouTube - BMW E92 M3 with Fabspeed Exhaust System